Concerning these lines:
I didn’t give it, I didn’t give it, I borrowed it hahaha
The most big that I had and you don’t want to give it back

"Borrowed" should be changed to "lent". In English "borrow" means when you take something from someone with the intent to return it. "Lend" is when you give something to someone and you expect them to return it to you.

There is no such phrase as "the most big". It should be "the biggest". I think the whole sentence "Lo más grande que tenía" should be translated to "The biggest thing I had".